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MPWR · Monolithic Power Systems, Inc.

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$1,282.01 -57.07 (-4.26%) At close · Jul 28
Market Cap
$65.79B
Shares
49.13M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 1,160
Total Value: $48,377,775,229
Total Shares: 43,919,411
Showing 1–100 of 1,189 holdings by value · page 1 of 12

Institutional Ownership Trend

26 quarters

Superinvestors Holding MPWR

All superinvestors →
Joel Greenblatt $24,580,694 Ray Dalio $13,056,785

Holder Concentration

Across 1,128 13F filers
Top Holder
13.9%
Jun 2023 → Mar 2026 · range 11.5% – 32.3%
of institutional value
Top 5
39.2%
Jun 2023 → Mar 2026 · range 37.4% – 57.2%
of institutional value
Top 10
49.7%
Jun 2023 → Mar 2026 · range 49.5% – 65.7%
of institutional value
HHI
428
Jun 2023 → Mar 2026 · range 402 – 1,247
Broadly held
Showing 100 of 1,189
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $6,639,331,785 13.72% 6,072,467
Mega FMR LLC $4,811,648,571 9.95% 4,400,831
Mega VANGUARD CAPITAL MANAGEMENT LLC $3,371,288,964 6.97% 3,083,449
Mega STATE STREET CORP $2,392,746,180 4.95% 2,188,454
Mega GEODE CAPITAL MANAGEMENT, LLC $1,565,749,360 3.24% 1,432,066
Mega PRICE T ROWE ASSOCIATES INC /MD/ $1,380,850,755 2.85% 1,262,954
Mega Invesco Ltd. $1,127,127,954 2.33% 1,030,894
Mega FRANKLIN RESOURCES INC $1,015,362,434 2.10% 928,671
Mega T. Rowe Price Investment Management, Inc. $788,985,413 1.63% 721,622
Mega MORGAN STANLEY $717,638,853 1.48% 656,367
Mega FIRST TRUST ADVISORS LP $646,555,802 1.34% 591,353
Mega GOLDMAN SACHS GROUP INC $621,092,772 1.28% 568,064
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $620,770,232 1.28% 567,769
Mega BARCLAYS PLC $607,692,674 1.26% 555,808
Mega JPMORGAN CHASE & CO $606,720,681 1.25% 554,919
Mega UBS Group AG $590,860,551 1.22% 540,413
Mega VAN ECK ASSOCIATES CORP $573,539,702 1.19% 524,571
Mega NORTHERN TRUST CORP Bank $534,779,347 1.11% 489,120
Mega ROYAL BANK OF CANADA Bank $517,556,897 1.07% 473,368
Large VOYA INVESTMENT MANAGEMENT LLC $430,297,732 0.89% 393,559
Mega BANK OF AMERICA CORP /DE/ Bank $417,836,819 0.86% 382,162
Mega Legal & General Group Plc $415,570,307 0.86% 380,089
Large BROWN ADVISORY INC $415,360,384 0.86% 379,897
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $411,508,512 0.85% 376,374
Mega CITIGROUP INC $372,648,665 0.77% 340,832
Large Rafferty Asset Management, LLC $347,109,104 0.72% 317,473
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $330,415,833 0.68% 302,205
Mega Bank of New York Mellon Corp Bank $316,885,621 0.66% 289,830
Mega VANGUARD FIDUCIARY TRUST CO Bank $304,496,881 0.63% 278,499
Large KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC $291,563,643 0.60% 266,670
Mega WELLINGTON MANAGEMENT GROUP LLP $273,896,201 0.57% 250,511
Mid Anther Capital Ltd $255,065,434 0.53% 233,288
Mega BNP PARIBAS ARBITRAGE, SA $244,922,426 0.51% 224,011
Mega AMERICAN CENTURY COMPANIES INC $218,325,594 0.45% 199,685
Mega RAYMOND JAMES FINANCIAL INC $214,362,197 0.44% 196,060
Large DekaBank Deutsche Girozentrale Bank $208,220,854 0.43% 190,443
Large VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. $200,406,256 0.41% 144,974
Large SG Americas Securities, LLC Broker-Dealer $198,733,856 0.41% 181,766
Mega DEUTSCHE BANK AG\ Bank $198,690,113 0.41% 181,726
Mega PRINCIPAL FINANCIAL GROUP INC $190,460,475 0.39% 174,199
Mega California Public Employees Retirement System Pension $174,562,074 0.36% 159,658
Mega Amundi $173,740,965 0.36% 158,907
Mega HSBC HOLDINGS PLC $173,703,792 0.36% 158,873
Mega Nuveen, LLC $170,402,970 0.35% 155,854
Large SEI INVESTMENTS CO $169,787,414 0.35% 155,291
Mega FIL Ltd $169,072,363 0.35% 154,637
Mega DIMENSIONAL FUND ADVISORS LP $168,121,147 0.35% 153,767
Large EARNEST PARTNERS LLC $165,938,822 0.34% 151,771
Large Artisan Partners Limited Partnership $164,956,994 0.34% 150,873
Mega NEUBERGER BERMAN GROUP LLC $164,119,487 0.34% 150,107
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $161,779,718 0.33% 147,967
Large NOMURA ASSET MANAGEMENT CO LTD $160,586,874 0.33% 146,876
Mega Swiss National Bank Bank $153,659,409 0.32% 140,540
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $151,975,650 0.31% 139,000
Mid TimesSquare Capital Management, LLC $151,800,714 0.31% 138,840
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $148,627,812 0.31% 135,938
Mega Mitsubishi UFJ Asset Management Co., Ltd. $143,865,179 0.30% 131,582
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $142,138,779 0.29% 130,003
Mega ENVESTNET ASSET MANAGEMENT INC $137,603,564 0.28% 125,855
Mega ALLIANCEBERNSTEIN L.P. $136,282,797 0.28% 124,647
Large Mirae Asset Global Investments Co., Ltd. $134,943,217 0.28% 97,618
Large LORD, ABBETT & CO. LLC $133,221,417 0.28% 121,847
Large Pictet Asset Management Holding SA $132,157,587 0.27% 120,874
Mega AMERIPRISE FINANCIAL INC $130,571,135 0.27% 119,423
Large Allspring Global Investments Holdings, LLC $129,896,538 0.27% 118,806
Mega Sumitomo Mitsui Trust Group, Inc. $125,149,214 0.26% 114,464
Mega VICTORY CAPITAL MANAGEMENT INC $122,446,453 0.25% 111,992
Mega Vanguard Global Advisers, LLC $116,553,296 0.24% 106,602
Mega RHUMBLINE ADVISERS $111,641,968 0.23% 102,110
Mega WELLS FARGO & COMPANY/MN $111,191,505 0.23% 101,698
Large CONGRESS ASSET MANAGEMENT CO $111,176,303 0.23% 80,425
Mid ZEVENBERGEN CAPITAL INVESTMENTS LLC $108,659,025 0.22% 78,604
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $106,929,630 0.22% 97,800
Large Allianz Asset Management GmbH $105,479,845 0.22% 96,474
Large Thrivent Financial for Lutherans $105,088,428 0.22% 96,116
Large NATIXIS ADVISORS, LLC $104,794,317 0.22% 95,847
Mid Robeco Schweiz AG $103,860,596 0.21% 94,993
Mid DF DENT & CO INC $96,815,049 0.20% 88,549
Large Impax Asset Management Group plc $96,713,367 0.20% 88,456
Large Caisse de depot et placement du Quebec $93,108,592 0.19% 85,159
Mega VANGUARD ASSET MANAGEMENT, Ltd $89,476,483 0.18% 81,837
Large ProShare Advisors LLC $89,043,517 0.18% 81,441
Mid FRONTIER CAPITAL MANAGEMENT CO LLC $87,138,901 0.18% 79,699
Large STIFEL FINANCIAL CORP $86,739,826 0.18% 79,334
Large Ensign Peak Advisors, Inc $85,386,261 0.18% 78,096
Large Baird Financial Group, Inc. $81,204,197 0.17% 74,271
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $80,527,414 0.17% 73,652
Large Quantinno Capital Management LP $79,564,172 0.16% 72,771
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $79,118,086 0.16% 72,363
Mega TD Asset Management Inc $78,841,468 0.16% 72,110
Mid Liontrust Investment Partners LLP $77,918,681 0.16% 71,266
Large STRS OHIO $76,323,483 0.16% 69,807
Large Candriam S.C.A. $75,379,922 0.16% 68,944
Large CIBC Bancorp USA Inc. Bank $75,243,253 0.16% 68,819
Mega LPL Financial LLC $74,286,572 0.15% 67,944
Mega National Pension Service Pension $74,036,195 0.15% 67,715
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $70,895,000 0.15% 64,842
Large NATIONAL BANK OF CANADA /FI/ Bank $69,575,326 0.14% 63,635
Large BAMCO INC /NY/ $68,874,489 0.14% 62,994
Large Robeco Institutional Asset Management B.V. $65,142,332 0.13% 47,124
Key facts CIK 1280452 CUSIP 609839105 13F (30d) 376 filings 346 filers Visit website Investor relations

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